/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMesh3.h
Flip/Rotate an edge of the mesh. This does not change the number of edges, vertices, or triangles. Boundary edges of the mesh cannot be flipped.
Ok on success, or enum value indicates why operation cannot be applied. Mesh remains unmodified on error.
virtual [EMeshResult](API\Runtime\GeometryCore\UE__Geometry__EMeshResult) FlipEdge ( int EdgeAB, [FEdgeFlipInfo](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3\FEdgeFlipInfo) & FlipInfo )